ATI today announced the first full release of their RenderMonkey shader development environment:

Support for REFRAST - Completely rewritten HLSL and Assembly editors - Display of HLSL disassembly - Addition of many more HLSL examples - Improved error checking and reporting - many more new features and improvements

RenderMonkey is a suite of open, extensible shader development tools for both current and future hardware that allows programmers and artists to collaborate on creating realtime shader effects.